Sport Gym Vertical Half Roll Viking Drawstring Mesh Backpack Black Made with 600D polyester with nylon mesh. Outside come one zippered pocket and 2 Mesh Bottle pocket on the side. On the top section, it made with mesh finishing easy for Security check and air fresh. It is great For Gym Drawstring Backpack, School, Napsack, Sock Pack, Hiking, and work. Dimension: 11"W x 20"H x 7-1/2"D